feat: add new reCAPTCHA Enterprise fraud annotations

protos/google/cloud/recaptchaenterprise/v1/recaptchaenterprise.proto

@@ -186,10 +186,21 @@ message AnnotateAssessmentRequest {
     // Default unspecified reason.
     REASON_UNSPECIFIED = 0;
 
-    // Indicates a chargeback for fraud was issued for the transaction
-    // associated with the assessment.
+    // Indicates a chargeback was issued for the transaction associated with the
+    // assessment, with no other details. When possible, specify the type by
+    // using CHARGEBACK_FRAUD or CHARGEBACK_DISPUTE instead.
     CHARGEBACK = 1;
 
+    // Indicates a chargeback related to an alleged unauthorized transaction
+    // from the perspective of the cardholder (for example, the card number was
+    // stolen).
+    CHARGEBACK_FRAUD = 8;
+
+    // Indicates a chargeback related to the cardholder having provided their
+    // card but allegedly not being satisfied with the purchase
+    // (for example, misrepresentation, attempted cancellation).
+    CHARGEBACK_DISPUTE = 9;
+
     // Indicates the transaction associated with the assessment is suspected of
     // being fraudulent based on the payment method, billing details, shipping
     // address or other transaction information.